The best part about owning any BMW M car is to hear the roar and rumble of the engine – even when you’re inside. Most people are found driving with the stereo system off and the windows down just to enjoy the sound of the engine. Well, BMW is tackling this problem with the 2012 BMW M5.
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The feature is known as Active Sound Design and here is an explanation from BMW:
Active Sound Design delivers precise feedback.
M5 drivers will be given an even more direct reminder of their car’s performance capability by technology that brings the distinctive sound of the high-performance V8 – in all its glory – into the cabin of the new BMW M5. The Active Sound Design technology specially developed for the new BMW M5 takes its cues from the driving situation at any one time to deliver an accurate reproduction of the engine’s sound through the car’s audio system. The system’s digital signal processing exchanges data directly with the engine management, allowing it to reflect the engine’s revs and torque, and the car’s speed over the road. The result over a smoothly driven journey is a discreet soundtrack in keeping with the harmonious and assured characteristics of the V8 powerplant. A stamp on the accelerator, meanwhile, prompts an immediate audible response to match the instantaneous – and typically M – burst of power from beneath the bonnet.
In generating its signals, Active Sound Design takes its cues from the firing sequence of the eight-cylinder engine and the frequency range of the exhaust system. This gives the driver an extremely accurate impression of current engine load and an even more intense sensation of the V8’s high-performance characteristics. At the same time the Active Sound Design control unit ensures an even spread of sound across all five seats of the new BMW M5, while observing the legal guidelines governing noise emissions inside and outside the car. The characteristics of the sound produced by the technology also adjust to the engine settings selected by the driver. For example, switching to “Sport” or “Sport+” mode sharpens not only the engine’s responsiveness but also the acoustic experience inside the car.
Refresher: The 2012 BMW M5 is powered by a 4.4L V8 engine with M TwinPower Turbo (consisting of Twin Scroll Twin Turbo Technology) making 560-hp between 6,000 and 7,000 rpm with a maximum torque of 502 lb-ft from 1,500 rpm. Mated to a 7-speed M Double Clutch Transmission Drivelogic (with steering wheel mounted paddle shifters), the 2012 BMW M5 goes from 0 to 62 mph in 4.4 seconds, 0 to 124 mph in 13 seconds with a top speed of 155 mph or 190 mph with M Driver’s Package.
– By: Omar Rana